Blast Rocks Nigerian Capital of Abuja

Rescue service work at the scene of an explosion at a shopping mall in Abuja, Nigeria, June 25, 2014. An explosion rocked a shopping mall in Nigeria's capital, Abuja and police say at least over 20 people have been killed and many wounded.

Olamikan Gbemiga/AP Photo

Rescue workers carry a body bag after a explosion at a shopping mall in Abuja, Nigeria, June 25, 2014.

Olamikan Gbemiga/AP Photo

Rescue service work at the scene of an explosion at a shopping mall in Abuja, Nigeria, June 25, 2014. An explosion rocked a shopping mall in Nigeria's capital, Abuja and police say at least over 20 people have been killed and many wounded.

Olamikan Gbemiga/AP Photo

Rescue workers assist a blast victim, after an explosion at a shopping mall in Abuja, Nigeria, June 25, 2014. An explosion rocked a shopping mall in Nigeria's capital, Abuja, and police say at least over 20 people have been killed and many wounded.

Olamikan Gbemiga/AP Photo

People watch as smoke fills the sky, after an explosion, at a shopping mall, June 25, 2014, in Abuja, Nigeria. An explosion rocked a shopping mall in Nigeria's capital, Abuja, and police say at least over 20 people have been killed and many wounded.

AP Photo

People watch as smoke fills the sky, after an explosion, at a shopping mall, June 25, 2014, in Abuja, Nigeria. An explosion rocked a shopping mall in Nigeria's capital, Abuja, and police say at least over 20 people have been killed and many wounded.

AP Photo

An injured woman is assisted, after an explosion, at a shopping mall, June 25, 2014, in Abuja, Nigeria. An explosion rocked a shopping mall in Nigeria's capital, Abuja, and police say at least over 20 people have been killed and many wounded.

AP Photo

An injured person is assisted after an explosion, at a shopping mall, June 25, 2014, in Abuja, Nigeria. An explosion rocked a shopping mall in Nigeria's capital, Abuja, and police say at least over 20 people have been killed and many wounded.